Plus Iraq had no airforce, no tanks, no missiles, no drones, most of all they had no supporters as Saddam had invaded every single country around him and the population hated him.
In contrast Iran has all of those, other than a good Airforce. But Missiles seem to be doing real well as a substitute for now. And despite all Israeli propaganda seems like they have a population that will die for their leaders. Israel's former PM said so, that we can take out a leaders or few, but we can never take out a leadership behind which, 70 Million Iranians are standing with their lives.